CareFusion PulseTrace PCA2 Manual Operativo página 29

guaranty these normal ranges to be representative of other
populations.
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15 20 25
Figure 1. SI vs. age in 233 asymptomatic subjects from South East
London between 19 and 70 years old (76 women). The solid line
represents the regression line and the dotted lines the 95%
confidence interval of the regression.
In this example the SI normal ranges are derived from the 95%
confidence interval of the regression.
Equation for the lower limit: 0.0517 x age + 3.0122
Equation for the upper limit: 0.1663 x age + 4.3858
The normal values are only displayed when the patient's age is
between 18 and 75.
30 35 40
age (yrs)
27
45 50 55 60 65 70 75